Finding the Fourth Proportional to 420,414.50, 580,190.88 and 236,716.28
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Solution
The fourth proportional to 420,414.50, 580,190.88 and 236,716.28 is: 326,679.09
Step by Step Solution
- Step 1: Write the proportion equation
420,414.50 : 580,190.88 = 236,716.28 : x - Step 2: Convert to fraction form
420,414.50/580,190.88 = 236,716.28/x - Step 3: Cross multiply
420,414.50x = 580,190.88 × 236,716.28 - Step 4: Simplify right side
420,414.50x = 137,340,626,803.53 - Step 5: Solve for x
x = 137,340,626,803.53/420,414.50 - Step 6: Final answer
x = 326,679.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.